"""
Copyright (c) 2022 Huawei Technologies Co.,Ltd.

openGauss is licensed under Mulan PSL v2.
You can use this software according to the terms and conditions of the Mulan PSL v2.
You may obtain a copy of Mulan PSL v2 at:

          http://license.coscl.org.cn/MulanPSL2

THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
See the Mulan PSL v2 for more details.
"""
"""
Case Type   : 防篡改
Case Name   : 超级用户对sysadmin用户创建的私有schema下的函数有EXECUTE权限,并且不能收回
Create At   : 2022/3/25
Owner       : @daiguatutu
Description :
    1.设置参数并重启数据库enableseparationofduty=on
    2.创建sysadmin用户
    3.sysadmin用户连接,创建函数
    4.超级用户连接，调用函数
    5.超级用户连接，回收public对函数的execute权限
    6.超级用户连接，调用函数
    7.清理环境
Expect      :
    1.成功
    2.成功
    3.成功
    4.成功
    5.成功
    6.成功
    7.清理环境成功
History     :
"""

import os
import unittest

from testcase.utils.Common import Common
from testcase.utils.CommonSH import CommonSH
from testcase.utils.Constant import Constant
from testcase.utils.Logger import Logger
from yat.test import macro


class Security(unittest.TestCase):
    def setUp(self):
        self.log = Logger()
        self.log.info(f'-----{os.path.basename(__file__)} start-----')
        self.pri_sh = CommonSH('PrimaryDbUser')
        self.constant = Constant()
        self.common = Common()
        self.u_name = 'u_security_function_privilege_0004'
        self.f_name = 'f_security_delete_privilege_0004'
        self.default_value1 = self.common.show_param('enableSeparationOfDuty')

    def test_security(self):
        text = '-----step1：设置参数并重启数据库enableSeparationOfDuty=on; ' \
               'expect:成功-----'
        self.log.info(text)
        mod_msg = self.pri_sh.execute_gsguc('set',
                                            self.constant.GSGUC_SUCCESS_MSG,
                                            'enableSeparationOfDuty=on')
        self.assertTrue(mod_msg, '执行失败:' + text)
        result = self.pri_sh.restart_db_cluster()
        self.assertTrue(result, '执行失败' + text)

        text = '-----step2：创建sysadmin用户 expect:成功-----'
        self.log.info(text)
        create_cmd = f"drop user if exists {self.u_name} cascade; " \
            f"create user {self.u_name} sysadmin " \
            f"password  '{macro.COMMON_PASSWD}';"
        msg = self.pri_sh.execut_db_sql(create_cmd)
        self.log.info(msg)
        self.assertIn(self.constant.DROP_ROLE_SUCCESS_MSG, msg,
                      '执行失败:' + text)
        self.assertIn(self.constant.CREATE_ROLE_SUCCESS_MSG, msg,
                      '执行失败:' + text)

        text = '-----step3：sysadmin用户连接,创建函数; expect:成功-----'
        self.log.info(text)
        sql_cmd = f"drop function if exists {self.u_name}.{self.f_name};" \
            f"create function {self.u_name}.{self.f_name}() " \
            f"return varchar as begin " \
            f"return 'gaussdb is better than oracle';end;"
        connect = f'-U {self.u_name} -W {macro.COMMON_PASSWD}'
        msg = self.pri_sh.execut_db_sql(sql_cmd, sql_type=connect)
        self.log.info(msg)
        self.assertIn(self.constant.DROP_FUNCTION_SUCCESS_MSG, msg,
                      '执行失败:' + text)
        self.assertIn(self.constant.CREATE_FUNCTION_SUCCESS_MSG, msg,
                      '执行失败:' + text)

        text = '-----step4：超级用户连接，调用函数 expect:成功-----'
        self.log.info(text)
        call_cmd = f"call {self.u_name}.{self.f_name}();"
        msg = self.pri_sh.execut_db_sql(call_cmd)
        self.log.info(msg)
        self.assertIn('gaussdb is better than oracle', msg, '执行失败:' + text)

        text = '-----step5：超级用户连接，回收public对函数的execute权限 expect:成功-----'
        self.log.info(text)
        revoke_cmd = f"revoke execute on function " \
            f"{self.u_name}.{self.f_name}() from public;"
        msg = self.pri_sh.execut_db_sql(revoke_cmd)
        self.log.info(msg)
        self.assertIn(self.constant.REVOKE_SUCCESS_MSG, msg, '执行失败:' + text)

        text = '-----step6：超级用户连接，调用函数 expect:成功-----'
        self.log.info(text)
        msg = self.pri_sh.execut_db_sql(call_cmd)
        self.log.info(msg)
        self.assertIn('gaussdb is better than oracle', msg, '执行失败:' + text)

    def tearDown(self):
        self.log.info('-----step7：清理环境-----')
        text1 = '-----删除用户 expect:成功-----'
        self.log.info(text1)
        drop_cmd = f"drop user if exists {self.u_name} cascade;"
        drop_msg = self.pri_sh.execut_db_sql(drop_cmd)
        self.log.info(drop_msg)

        text2 = '-----修改参数enableSeparationOfDuty为初始值 expect:成功-----'
        self.log.info(text2)
        mod_msg1 = self.pri_sh.execute_gsguc('set',
                                             self.constant.GSGUC_SUCCESS_MSG,
                                             f'enableSeparationOfDuty='
                                             f'{self.default_value1}')
        restart_res = self.pri_sh.restart_db_cluster()

        self.log.info('-----断言tearDown执行成功-----')
        self.assertIn(self.constant.DROP_ROLE_SUCCESS_MSG, drop_msg,
                      '执行失败:' + text1)
        self.assertTrue(mod_msg1, '执行失败:' + text2)
        self.assertTrue(restart_res, '执行失败:' + text2)
        self.log.info(f'-----{os.path.basename(__file__)} end-----')
